Window ventilator



y 30. POMRENKE 1,770,945

4 WINDOW VENTILATOR Filed Jan. 30, 1929 may be left in and view taken from the same position as Fig look oth Patented Jul' 22,1930

LOUIS POMRENKE, TRENTON, MICHIGAN wmnow vnnrrnnron Application filed January 30, 1929. Serial No. 336,290.

tilator apparatus, particularly adapted for installation in the side window of a bus dr or motor vehicle, railroad car, and the like, and has for its object an improved organization of parts whereby an outflow of air of regulatable degree may be induced from the interior of the vehicle without any unpleasant eifect upon persons seated therewithin, and yet which will adequately effect a change of air therewithin without the necessity'of having the window open to an uncomfortable degree, as would be the case particularly if a cross wind were encountered. If for any reason it is desired to temporarily dispense with the apparatus, it is easily removable and replaceable, or, if preferred, it closed practically air-tight by the manually elfected sliding of the cover plate or closur member.

In the drawings: 4

Figure 1 is a side elevational view of a part of a vehicle body showing my improved device in position therein.

Figure 2 is an enlarged side elevational ure 1.

Figure 3 is a sectional plan view taken along the line 3 3 of Figure 2, and looking in the direction of the arrows there shown. Figure 4 is a perspective of the device ing toward the interior face or side. igure 5 is a cross sectional view taken along the line 55 of Figure 3 and looking in the direction of the arrows there shown.

A'indicates a vehicle body of any desired construction, and B the partially lowered window,the space between the top edge of which and the top of the window frame being designed to be occupied by my improved ventilator. This consists essentially of a rectangular frame C, preferably of channeled cross-sectional form, as brought out in Figure 4. Slidably supported within this channel is a closure member F provided with a kno b G for convenient actuation, this closure piece being of approximately half the length of the ventilator as a whole. When in drawn back position, so that the ventilator is functioning to its full capacity, this .This invention relates to an improved venclosure Tam- OFFICE panel F lies in spaced parallel relation with the fixed panel E, which extends half of the length of the ventilator as about a whole.

The forward end of' this fixed panel E, which is located on the outside of the shell,

that is, on the outside of the c ably c urved slightly at the poin form the rear boundary of the .sp

by a series of incline which forward end of ar, is prefert H so as to ace occupied d vanes or battle members extend angularly outward from the the ventilator,

being supported at their top and bottom edges by the tapering border pieces J. The forward curved edges of the border pieces are s angular piece K the preferred as brought out particularly in 4, extends for a portion of it tically right angularly to th ventilator 'as a whole, sharply rearwardly.

and then Thus, as

space between the rearward edge ber K the sp is left between them of which plane of the and the slightly outbent ace between the open,

it will be noted, from an i panned by the form of which, Figures 3 and s length prace plane of the turns quite regards the of the memportion H,

bordering members J except for the spaced positiomng the vanes or baflie members,

nspection of are preferably placed angles relatively to the of the ventilator, beginning with a quite sharp angle as regards the positioning vane M near the curved portion H and approaching much more nearly a lar position as regards the slant N next adjacent the these vanes or baflles being of wind breake perpendicuof the vane r portion K,

progressively lesser breadth accordingly. When, however. it is desired to close the slide;

movin the the ou of the panel F by g it to the forward portion of the venter air the bottom or several vanes or bafiies.

rattling, I preferably provide a on the 0 which is curved suiiiciently to engage the inner edge of the 86V the closure panel is drawn therea The as foll n as regards nication with is negatived by the presence of .the slide across inner edges To prevent leaf spring uter side of the closure panel F,

frictionally ral baffles as cross.

ed device is end plate K plate swirls around and over p the vehicle being three or at the to" the'plane of the ventilator as a whole,

which latter in turn parallels the course of the vehicle, this end plate, receives the direct transverse impact of the wind, illustrated by the arrow W, as the vehicle travels along, though its outward extent of only about most four inches is negligible as regards wind resistance to the travel of the vehicle as a whole. The windjthus strikg ing the perpendicular portion'of this impact the curved outer edge thereof toward the rear or fixed vpanel E, leaving more or less of a vacuum immediately adjacent the outer edges of the several vanes or baflle plates, on something the same principle that the wing of an aeroplane is made more or less thick at its forward edge in order to benefit from the lifting influence of the partial vacuum created immediately above it by the corresponding initial and.

then deflected impact of the wind against its forward edge. The induced swirling of the air' about and over'the curved outer edge of this impact plate resultsinlthe air inside drawn outwardly between the several vanes by the vacuum condition thus created immediately adjacent their outer edges, as emphasized graphically by the several curved line arrows, X, Y and Z, shown in Figure 3, and ithas been .my experience from repeated severe tests of such a device that proportionately to the exposed air passage space as regulated by the position of the closure panel F a remarkable degree of outward draught is secured, and that this is materially aided and guided by the slightly progressive an ular inclination ofthe several baffles as they lie spacedly adjacent one another from front to rear. It will of course be obvious that the size of the exposed space between the vanes or I regulated as regards the actual outflow of air from the vehicle by the selective positioning of the slidable closure panel F It will thus be seen that, without resorting to the use of an external wall piece, whic with the main body of the ventilator woul serve as more or less of a funnel, I have produced an efficiently functioning ventilator mechanism, whereby an adequate quantity of bad air may hicle with a minimum of discomfort to the and angularity of the occupants, compensation for which' in the form of indrawn fresh air can be confidently looked for through the various incompletely closed cracks and apertures of the vehicle enclosure. Modifications as to the number vanes, as well .as the details of the frame and door or closure panel as such, can be indulged in without departure my invention, even to the degree of entirely omitting closure panel F if desired.

h forward portion of the normally open 1 of said frame, adapted -to deflect the air over side of the normally be withdrawn from the ve the slidable WhatIclaimisr 4 1. A window ventilator, having in combination with a partially apertured frame, a slidable closure member adapted to move, in spaced parallel relation to the closed portion of said frame, a wind impact member extending perpendicularly outward from the forward end of said frame and adapted to curvingly deflect the air impinging against it toward the rear portion of said frame and relatively over the forwardportion thereof, and a plurality of baflle members spacedly positioned, across the normally open portion of the frame and 'adapted'to cooperate with one another and with the flanking edge portions of the frame in guiding outside the vehicle the exhausted air which is outwardly drawn by the induced vacuum conditions prevailing just outside of the outer edges of said baflle members.

2. In a window ventilator, in combination with a frame havingaplurality of variantly angular 'baflle members spacedl opposite its open portion, a wind impact and deflecting member extending substantially perpendicularly to the plane of the frame as a whole and at one end of said series of baflle members,

air over and to the rear of the outer edges of said bafile members and to resultantly create a tendency toward vacuum conditions immediately adjacent thereto, and means for regulatably closing the space within the frame opposite said baffle members.

3. In a window ventilator, in combination with a frame adapted for removable positioning in-the plane of the window of a vehicle, the rear portion of said frame being provided with a permanent closure plate, a slidable closure element positioned within said frame in spaced parallel relation to the (plane of said permanentgclosure plate and. a apted to be moved to position of closure as to that portion of the frame not occupied by said permanent closure plate, a wind impact panel extending perpendicularly outward from the part and rearwardly of the space immediately out frame provided with a fixed panel and'a slidable panel whereby when the latter is positioned open part of the frame, thereby creating a tendency toward a vacuum: 1

adapted to curvingly deflect the positioned and progressively nariac moved to the forward endof the frame its complete closure may be effected, a plurality of angularly spaced vane members of progressively decreasing breadth from, the front to the rear of the open portion of said frame, and a wind impact plate extending perpendicularly to the plane of said frame in front of the most'forwardly located-and broadest one of said vanes, whereby the air primarilystriking thereagainst is curvingly deflected toward the space adjacent the outer rearward face of said-frame, thereby creating a tendency toward a vacuum condition immediately adjacent the outer edges of said vanes and resultantly effecting an outward movement of air through the spaces between said vanes, subject to the regulated positioning of said slidable panel relatively thereto.

5. In a window venti1ator, in combination with a frame provided with a fixed panel and a sliding panel, the latter when in forward position being adapted to close that portion of the frame not occupied by said fixed panel a series of bafiie members spacedly supported in variantly angular position across the normally open portion of said frame,-said bafiie members being of to rear of said open portion of said frame,

and a wind impact element extending substantially perpendicularly outwardly from the forward end of'said frame, whereby the air primarily striking thereagainst is curvingly deflected-toward the rear outerface of said frame, thereby creating a partial vacuum in the space adjacent the outer edges of said baflle members, for inducing an outflow of air through the spaces between them and through the open portion of the'frame from the interior of the vehicle wherein the ventilator ispositioned.

6. In a window ventilator,the combination, with a frame, of a pair of closure panels positioned therewithin, one of said panels being slidable for regulatably eifecting the closure of the s ace within the frame not occupied by the ed panel, a wind impact plate extending outward from the forward edge of that portion-of the frame remote from that occupied by the fixed panel, and a plurality of bafiie members 'of progressively decreasing V breadth spacedly positioned across the normally open portion of said which air is adapted to be drawn outwardly from the interior of the vehicle in response to the created vacuum tendency just outside the outer edges of said bafile members, dueto the curved path of the deflected air from said wind impact plate toward the rearwardly located fixed panel portion of the frame.

A window combination, a f ame member adapted to be positioned in the space made available by the lowering of the lected portio'ns of the top and bottom portions of'saidframe bein of ta erin width as viewed from above or eneat ,a p urality of spacedly disposed vane members of rogressively diverse width supported at t eir graded breadth from front frame, between window of a vehicle, se

tion.

' LOUIS POMRENKE.

ends by said tapering frame portions in poedges of said vane members,

ventilator, comprising in 

